Home / 2,390.95-3,561.77-2,318.41

Finding the Fourth Proportional to 2,390.95, 3,561.77 and 2,318.41

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Solution

The fourth proportional to 2,390.95, 3,561.77 and 2,318.41 is: 3,453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.95 : 3,561.77 = 2,318.41 : x
  2. Step 2: Convert to fraction form
    2,390.95/3,561.77 = 2,318.41/x
  3. Step 3: Cross multiply
    2,390.95x = 3,561.77 × 2,318.41
  4. Step 4: Simplify right side
    2,390.95x = 8,257,622.69
  5. Step 5: Solve for x
    x = 8,257,622.69/2,390.95
  6. Step 6: Final answer
    x = 3,453.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.